Question

one third of the herd of cows are grazing in the field 20 less then half of them are near the river the remaining 35 are tied with the trees find the total number of cows in a herd

Answer 1

54 cows are there in a herd

Answer 2

Let the total no. of cows be a

According to question
No. of cows grazing = x/3
No. of cows near river = (x/2) - 20
No. of cows left = 35

Total cows - (No. Of cows grazing + No. Of cows near the river) =No. of cows left
=> x - (x/3+x/2 - 20) = 35
=> x - (2x+3x - 120)/6 = 35
=> (6x - 5x +120) = 35*6
=> x + 120 = 210
=> x = 90

Total no. of cows = 90

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